Aquaculture International最新文献

{"title":"The blue economy: assessing the comprehensive benefits and future development trends of China’s marine aquaculture industry","authors":"Zexi Yin,&nbsp;Zifei Liu,&nbsp;Xiuhui Sun,&nbsp;Fei Li","doi":"10.1007/s10499-025-01856-6","DOIUrl":"10.1007/s10499-025-01856-6","url":null,"abstract":"<p>This paper constructs a comprehensive benefit evaluation index of the mariculture industry from four dimensions: industrial development, green ecology, governance capacity, and scientific and technological innovation. The entropy weight TOPSIS model is employed to analyze the comprehensive benefits of China’s mariculture industry, and the grey dynamic model GM (1,1) is combined to predict and analyze its future trends. The results demonstrate that the overall comprehensive benefits of mariculture in China present a fluctuating upward trend, and the predicted value of the comprehensive benefit evaluation index of mariculture in the future shows a continuous upward tendency.</p>","PeriodicalId":8122,"journal":{"name":"Aquaculture International","volume":"33 3","pages":""},"PeriodicalIF":2.2,"publicationDate":"2025-02-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143396604","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Disease management and biosecurity adoption status in finfish aquaculture: insights from Bangladesh","authors":"Farhana Ahmed,&nbsp;Walter Luyten,&nbsp;Jan Paeshuyse","doi":"10.1007/s10499-025-01857-5","DOIUrl":"10.1007/s10499-025-01857-5","url":null,"abstract":"<div><p>The finfish aquaculture sector of Bangladesh plays a vital role in food security and the national economy. However, its sustainability is often jeopardized by disease outbreaks. This study evaluated disease management practices, biosecurity adoption status, and the factors influencing disease occurrence and biosecurity adoption in Bangladesh’s finfish aquaculture sector. Data were collected from 400 farmers across 6 major fish-producing districts through an online survey tool covering farmer demographics, fish culture practices, disease management practices, and adoption of biosecurity measures. Results revealed that most farmers were male (87%), experienced (&gt; 10 years, 53%), literate, full-time (78%) operators, managing small-scale farms (&lt; 0.45 ha), and favored polyculture technique. Disease occurrence ranked among the top two challenges, affecting approximately 70% of the studied farmers. Common disease management practices included water quality management and chemical therapeutics use (91% each), antibiotics use (53%), and other operational modifications. Overall, biosecurity adoption among farmers was approximately 68%, with 56% identified as high adopters. Widely adopted biosecurity practices included regular farm monitoring and having proper feed storage (96% each) while avoiding restocking (14%) was the least adopted. Significant (<i>P</i> &lt; 0.05) regional variations were observed in farmer demographics, fish culture practices, disease occurrences, and biosecurity adoption levels. Significant associations between disease occurrence and biosecurity adoption with several socio-demographic and operational factors emphasized the need for tailored interventions. The findings thus underscore the importance of area-specific biosecurity guidelines and strategic approaches to enhance biosecurity compliance, reduce disease risks, and ensure the sustainability of the aquaculture sector.</p></div>","PeriodicalId":8122,"journal":{"name":"Aquaculture International","volume":"33 3","pages":""},"PeriodicalIF":2.2,"publicationDate":"2025-02-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s10499-025-01857-5.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143396605","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Characterization of CYP3A genes and the impact of letrozole on gonadal development in Apostichopus japonicus","authors":"Lingnan Kong,&nbsp;Abudula Abulizi,&nbsp;Jingjing Cong,&nbsp;Weihan Meng,&nbsp;Yaqing Chang,&nbsp;Zhihui Sun","doi":"10.1007/s10499-025-01862-8","DOIUrl":"10.1007/s10499-025-01862-8","url":null,"abstract":"<div><p>The cytochrome P4503A (<i>CYP3A</i>) subfamily has been well characterized in vertebrates, where it plays a pivotal role in xenobiotic detoxification and the regulation of steroid hormone levels. However, their molecular features and functions in invertebrates remain poorly understood. The sea cucumber (<i>Apostichopus japonicus</i>) is not only a commercially significant mariculture species but also an excellent model for studying organ development and evolutionary biology. In this study, we identified seven <i>CYP3A</i> genes in <i>A. japonicus</i> using gonadal transcriptomic data. These genes exhibited ubiquitous expression across adult tissues, with significantly higher levels in ovarian tissues compared to testes tissues. Protein sequence analysis revealed that the catalytic residues Ala ₃₀₆-Thr ₃₁₀-Cys ₄₃₇, which are critical for aromatase activity, are highly conserved. This suggests that CYP3A proteins may mediate aromatization-like reactions similar to CYP19A in vertebrates. Additionally, dietary administration of the aromatase inhibitor letrozole led to histological changes in the testes and a reduction in the diameter of large oocytes in the ovaries. These findings provide valuable insights into the molecular mechanisms underlying gonadal development in sea cucumbers and lay the groundwork for future research on the artificial induction of sex reversal in echinoderms.</p></div>","PeriodicalId":8122,"journal":{"name":"Aquaculture International","volume":"33 3","pages":""},"PeriodicalIF":2.2,"publicationDate":"2025-02-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143388752","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Performance of mangrove seedling (Rhizophora sp.) planted on super-intensive shrimp pond solid waste as media","authors":"Suwardi Suwardi,&nbsp;Hidayat Suryanto Suwoyo,&nbsp;Andi Sahrijanna,&nbsp;Mat Fahrur,&nbsp;Sri Redjeki Hesti Mulyaningrum,&nbsp;Makmur Makmur,&nbsp;Imam Taukhid,&nbsp;Rachman Syah","doi":"10.1007/s10499-025-01866-4","DOIUrl":"10.1007/s10499-025-01866-4","url":null,"abstract":"<div><p>Super-intensive shrimp culture has been proven to increase shrimp production in ponds, but it has consequences for the waste generated, which is quite large, up to 10–20 tons/cycle. This great potential is expected to benefit the growth of mangroves as coastal ecosystem plants. This study evaluated mangrove growth performance using the ratio between super-intensive pond (SIP) solid waste and coastal soil. The study was set using a completely randomized design using four treatments, each with three replications, namely treatment, A = 25% SIP solid waste + 75% coastal soil, B = 50% SIP solid waste + 50% coastal soil, C = 75% SIP solid waste + 25% coastal soil, and D = 100% SIP solid waste. Each treatment planted mangrove seeds with a spacing of 50 × 60 cm², and 30 trees were obtained per experimental unit. The results obtained showed that the treatments tested had a significant effect (<i>P</i> &lt; 0.05) on plant height growth, while stem diameter, number of leaves, plant sturdiness, and survival rate of mangrove did not significantly different results (<i>P</i> &gt; 0.05) for all treatments. The 100% SIP solid waste treatment produced the highest plant height of 16.2 cm, good plant sturdiness, and achieved 100% survival of mangrove seedlings across all treatments. The use of shrimp pond solid waste as mangrove seedling media has an impact on reducing waste in coastal areas, maintaining the aquaculture environment, developing sustainable aquaculture, and supporting the enhancement of mangrove restoration.</p></div>","PeriodicalId":8122,"journal":{"name":"Aquaculture International","volume":"33 3","pages":""},"PeriodicalIF":2.2,"publicationDate":"2025-02-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143388750","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Porous lignocellulosic biomass enhances ammonia biotransformation in aquaponics water","authors":"Rajkumar Debarjeet Singh,&nbsp;Kishore Kumar Krishnani,&nbsp;Kalpana Arambam,&nbsp;Narinder Kumar Chadha,&nbsp;Kapil Sukhdhane,&nbsp;Madhuri S. Pathak,&nbsp;Ajit Kumar Verma","doi":"10.1007/s10499-025-01874-4","DOIUrl":"10.1007/s10499-025-01874-4","url":null,"abstract":"<div><p>The aquaculture industry faces significant challenges in maintaining fish production due to the high concentrations of ammonia, which needs to be addressed in an environmentally sound and economically viable approach. The present study explores the use of cheap, readily available, and environmentally friendly sugarcane bagasse and luffa sponge fiber as porous lignocellulosic biomass for biotransforming ammonia in experimental aquaponics water. A 45-day experiment was set up, with <i>Pangasianodon hypophthalmus</i> as the experimental fish in tanks containing aquaponics water. The study consists of a control (CON) and three treatments, viz. BAF (Bagasse), LuF (Luffa fiber), and MixF (Bagasse + Luffa fiber). Weekly spiking of ammonia at different doses was carried out (2, 2.5, 3, 5, and 10 mg L⁻¹). Porous lignocellulose reduced ammonia, resulting in lower stress and better growth through two mechanisms, viz., substrate for the autotrophic nitrifiers to perform nitrification shown by the increase in nitrite with the decrease in ammonia and the assimilation of ammonia by the aerobic heterotrophs using the lignocellulose as a carbon source, which is indicated by the increase in the colony-forming units in terms of biofloc in the water. The result showed the ammonia removal efficiency to be highest in MixF with 67.75% ± 3.26 after 96 h of spiking 10 mg L⁻¹ TAN, followed by BAF and LuF, while the control group was ineffective at 10 mg L⁻¹ TAN. The treatment groups also showed higher fish yield performance and better hematological and serum biochemical parameters as compared to the control group, as plant-assisted bioremediation protects fish against ammonical stress. The study addresses the critical issue of ammonia management in aquaculture by developing an economically sound and sustainable bioremediation model based on the combined effect of biofilm and biofloc. The research enhances the understanding of ammonia’s impact on cultured species and offers a novel, cost-effective solution using lignocellulosic biomass.</p></div>","PeriodicalId":8122,"journal":{"name":"Aquaculture International","volume":"33 3","pages":""},"PeriodicalIF":2.2,"publicationDate":"2025-02-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143388751","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Correction to: Influences of dietary protein source and extrusion temperature on growth performance, tissue composition, and gut microbiota of grass carp Ctenopharynodon idellus","authors":"Zhimin Zhang,&nbsp;Qiushi Yang,&nbsp;Tingting Xu,&nbsp;Haokun Liu,&nbsp;Junyan Jin,&nbsp;Yunxia Yang,&nbsp;Xiaoming Zhu,&nbsp;Dong Han,&nbsp;Shouqi Xie","doi":"10.1007/s10499-025-01850-y","DOIUrl":"10.1007/s10499-025-01850-y","url":null,"abstract":"","PeriodicalId":8122,"journal":{"name":"Aquaculture International","volume":"33 3","pages":""},"PeriodicalIF":2.2,"publicationDate":"2025-02-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s10499-025-01850-y.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143373306","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Gut microbiome composition likely affects the growth of Trachinotus ovatus by influencing the host's metabolism","authors":"Chen-Xu Wu,&nbsp;Bao-Suo Liu,&nbsp;Hua-Yang Guo,&nbsp;Teng-Fei Zhu,&nbsp;Lin Xian,&nbsp;Nan Zhang,&nbsp;Ke-Cheng Zhu,&nbsp;Dian-Chang Zhang","doi":"10.1007/s10499-025-01848-6","DOIUrl":"10.1007/s10499-025-01848-6","url":null,"abstract":"&lt;div&gt;&lt;p&gt;Gut microbiota are essential in regulating host growth, development, and various pathophysiological processes, yet the exact mechanisms by which they operate remain largely unknown. &lt;i&gt;T. ovatus&lt;/i&gt; is a key species in fishery trade, possessing a diverse gut microbiota, though the relationship between this microbial diversity and its growth is not well understood. To bridge this knowledge gap, we used 16S rRNA gene amplicon sequencing to compare the gut bacterial communities of cohabitating retarded, overgrown, and normal &lt;i&gt;T. ovatus&lt;/i&gt; collected from similarly managed ponds. Significant differences were found between the gut bacterial communities of retarded, overgrown, and normal individuals, particularly in terms of the abundance of specific bacterial families and genera. For instance, overgrown &lt;i&gt;T. ovatus&lt;/i&gt; showed a significantly higher proportion of &lt;i&gt;Pseudomonadaceae&lt;/i&gt;, &lt;i&gt;Lactobacillaceae&lt;/i&gt;, and &lt;i&gt;Brevinemataceae&lt;/i&gt; families, as well as the &lt;i&gt;Vibrio&lt;/i&gt;, &lt;i&gt;Pseudomonas&lt;/i&gt;, and &lt;i&gt;Brevinema&lt;/i&gt; genera. Normal &lt;i&gt;T. ovatus&lt;/i&gt; were more enriched with Vibrionaceae and &lt;i&gt;Vibrio&lt;/i&gt;, while retarded &lt;i&gt;T. ovatus&lt;/i&gt; showed higher abundances of Mycoplasmataceae, &lt;i&gt;Mycoplasma&lt;/i&gt;, and the &lt;i&gt;Lachnospiraceae NK4A136 group&lt;/i&gt;. Overall, the Normal group had the highest species diversity and evenness, with the Retarded and Overgrown groups showing minimal differences. The PCA biplot visually highlighted distinct gut bacterial communities among retarded, normal, and overgrown T. ovatus, with ANOSIM confirming significant differences (&lt;i&gt;P&lt;/i&gt; &lt; 0.05) in microbial composition between each group, indicating a strong link between growth status and gut microbiome. The Pearson correlation coefficient showed that &lt;i&gt;Pseudomonas&lt;/i&gt; and &lt;i&gt;Brevinema&lt;/i&gt; were strongly positively correlated with the body height, body length, and body weight of &lt;i&gt;Trachinotus ovatus&lt;/i&gt;; &lt;i&gt;Vibrio&lt;/i&gt; was significantly positively correlated with the body length and body weight of &lt;i&gt;T. ovatus&lt;/i&gt;; &lt;i&gt;Mycoplasma&lt;/i&gt; was strongly negatively correlated with all physiological parameters, while &lt;i&gt;Methyloversatilis&lt;/i&gt; and &lt;i&gt;Lachnospiraceae NK4A136 group&lt;/i&gt; were significantly negatively correlated with the body length of &lt;i&gt;T. ovatus&lt;/i&gt;. The module hubs in the normal group (ASV13 and ASV19) were classified as Rhodocyclaceae; Methyloversatilis and Vibrionaceae; Vibrio, respectively. The module hub in the retarded group (ASV32) was classified as Akkermansiaceae; Akkermansia; muciniphila. These findings suggest that the interspecies interaction network within the gut bacterial communities of T. ovatus is disrupted by significant changes in the topological roles of individual ASVs, potentially affecting overall community stability. Additionally, the metabolic pathways mediated by intestinal bacteria, such as those involved in amino acid, carbohydrate, energy, glycoside biosynthesis, and lipid metabolism, were significantly more active in retarded &lt;i&gt;T. ova","PeriodicalId":8122,"journal":{"name":"Aquaculture International","volume":"33 3","pages":""},"PeriodicalIF":2.2,"publicationDate":"2025-02-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s10499-025-01848-6.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143373307","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Relationship of bioelectrical impedance to organoleptic sensory data of farm-raised olive flounder, paralichthys olivaceus","authors":"Jack Colman,&nbsp;Scott Zimmerman,&nbsp;Ronald H. Hoenig,&nbsp;M. Keith Cox,&nbsp;John D. Stieglitz","doi":"10.1007/s10499-025-01845-9","DOIUrl":"10.1007/s10499-025-01845-9","url":null,"abstract":"<div><p>There exists a need for simple, objective, noninvasive digital testing methods to ensure the quality of seafood products as they move from harvest sites to consumers. In this study, <i>Paralichthys olivaceus</i> sourced from a land-based aquaculture tank were harvested and bioelectrical impedance analysis (BIA) scores and organoleptic sensory data were recorded for each fish. The Certified Quality Reader 3.0 BIA device (“CQR®;” CQ Foods Inc.) used BIA data to generate a certified quality number (CQN) that was used to objectively quantify results. Organoleptic scores were obtained by Safe Quality Seafood Associates (SQSA) using standard methods. Mean CQN increased from day 1 to day 5 post-harvest and then decreased from day 5 to day 20 post-harvest. There was strong correlation between BIA data and organoleptic data, indicating the usefulness of BIA for objectively quantifying levels of degradation in this species of fish. Mean CQN and mean organoleptic scores were inversely related in post rigor mortis fish. Notably, BIA was able to differentiate objectively between fresh versus frozen fish samples. This study suggests that BIA can be used for rapid, noninvasive quality assurance of the degradation state of fish, though individual variability is high for measurements which may be controlled by the development of a standardized sample location.\u0000</p></div>","PeriodicalId":8122,"journal":{"name":"Aquaculture International","volume":"33 3","pages":""},"PeriodicalIF":2.2,"publicationDate":"2025-02-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s10499-025-01845-9.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143361933","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Mini review: The genus Porphyra sensu lato (Bangiales, Rhodophyta), its pests and defence","authors":"Michael Friedlander,&nbsp;Alan T. Critchley","doi":"10.1007/s10499-025-01863-7","DOIUrl":"10.1007/s10499-025-01863-7","url":null,"abstract":"<div><p>The temperate genus <i>Porphyra sensu lato</i> has a long history of marine farming. Members of the genus are amongst the most common and economically valuable, commercially cultivated seaweeds on nets in the open sea. Species have a heteromorphic life cycle, alternating between a macroscopic blade and a microscopic, phase. The latter is an endolithic, shell-borne, filamentous thallus called the conchocelis which is cultivated separately within various bivalve shells in shallow ponds, on land. As a crop, its cultivation is accompanied by ever-increasing incidences of pests and diseases of both the blade and conchocelis phases. Serious damage is reported to be caused by the oomycete fungus <i>Pythium (Py.) porphyrae</i> and the chytrid <i>Olpidiopsis</i> spp., which have decreased the productivity of large-scale open sea farms especially in Korea and the northern coast of China. Interestingly, calcium propionate is effective combating oomycete infections. Early detection and development of resistant <i>Porphyra</i> strains, perhaps with some prophylactic, prebiotic treatments of low molecular weight oligoagars and selected probiotic, immune-stimulating bacteria might limit the damaging effects and economic consequences of this disease. In addition, cultivation nets are washed in acid to prevent carry over of disease-causing agents. As with any marine farming activity, epiphytes and grazers can also be issues faced by the farmers, but nothing as serious as the various rotting diseases. A summary of these studies is presented as a guide for rapid responses and applied management techniques for the amelioration of cultivation diseases, grazers, and harmful epiphytes affecting the two distinct phases of commercial <i>Porphyra</i> cultivation.</p></div>","PeriodicalId":8122,"journal":{"name":"Aquaculture International","volume":"33 3","pages":""},"PeriodicalIF":2.2,"publicationDate":"2025-02-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143361872","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Different stocking density effects on growth performance, muscle protein composition, and production cost of Nile tilapia (Oreochromis niloticus) juveniles in on-growing stage in biofloc system","authors":"Víctor Hugo Fuentes-Andraca,&nbsp;Sergio Carlos Ángeles Campos,&nbsp;Héctor Castillo-Juárez,&nbsp;Etzaguery Janeth Marin-Coria,&nbsp;Juan Carlos Quintana-Casares,&nbsp;Roger Domínguez-May,&nbsp;Gabriel Ricardo Campos-Montes","doi":"10.1007/s10499-025-01860-w","DOIUrl":"10.1007/s10499-025-01860-w","url":null,"abstract":"<div><p>Nile tilapia stocking density effect is determined by growth performance, muscle protein composition, and production cost in the on-growing stage. Randomized Nile tilapia were stocked at three densities 59 (D59), 89 (D89), and 117 (D117) fish m⁻³ in four tanks per treatment. The experiment was performed in 12 indoor 40 m⁻³ rectangular tanks with brackish water (4 ppt salinity) and constant aeration for 69 days, analyzing final body weight (FBW), feed conversion ratio (FCR), final biomass (FB), food consumption (FC), average weight gain (AWG), biomass gain (BG), carcass yield (CY), fillet yield (FY), crude protein (CP), digestible protein (DP), true protein (TP), and unit production cost (UPC). Stocking density affected FBW, FCR, FB, FC, AWG, BG, CP, and DP (<i>P</i> &lt; 0.05). FBW and AWG decreased significantly, and FCR, FB, FC, and BG increased significantly with increasing stocking density (<i>P</i> &lt; 0.05); CP and DP ranged from 66.8 to 72.2% and 66.7 to 72.0% respectively, being higher in D59 and lower in D89. Stocking density had no effect on CY, FY, and TP of Nile tilapia (<i>P</i> &gt; 0.05). Stocking density had a direct effect on UPC increasing with stocking density. Overall, high stocking density had a negative effect on growth performance, muscle protein composition, and production cost of Nile tilapia juveniles. These findings are important for vertically integrated tilapia farms due to high stocking densities resulting in a more expensive product with lower quality, which affects the tilapia production chain.</p></div>","PeriodicalId":8122,"journal":{"name":"Aquaculture International","volume":"33 3","pages":""},"PeriodicalIF":2.2,"publicationDate":"2025-02-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143361873","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}